期刊
CHEMSUSCHEM
卷 9, 期 7, 页码 657-661出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/cssc.201501665
关键词
hole transport; oxadiazole; perovskite; solar cells; titania
资金
- European Union [291771]
- University of Pisa [2015_0038]
A new hole-transport material (HTM) based on the 1,3,4-oxadiazole moiety (H1) was prepared through a single-step synthetic pathway starting from commercially available products. Thanks to a deep HOMO level, H1 was used as HTM in CH3NH3PbBr3 perovskite solar cells yielding an efficiency of 5.8%. The reference HTM (Spiro-OMeTAD), under the same testing conditions, furnished a lower efficiency of 5.1%. Steady-state and time-resolved photoluminescence of the thin films showed good charge-extraction dynamics for H1 devices. In addition, H1 shows a large thermal stability and completely amorphous behavior (as evaluated by thermal gravimetric analysis and differential scanning calorimetry).
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